PHYS 183 Chapter Lectures 5,6,7 and 8: Chapter 2 Review
Document Summary
2. 1, 2. 2, 2. 3 and 2. 4 (lectures 5, 6, 7 and 8): Any position on earth can be specified using latitude and longitude. 0 degrees lat is the equator and 0 degrees long lies along greenwich england. Latitude is north south and longitude is east west. Meridian: the circle through the zenith connecting the north and south poles. Celestial sphere: the celestial equator is the projection of the earth"s equator onto the celestial sphere. Ra overhead is constantly changing as the earth rotates. One can find their latitude while looking at polaris, which gives the approximate location of the north celestial pole. One can find polaris by looking at the big dipper. The handle of ursa minor connects to the bucket of ursa major. At the equator all stars will be visible some time during the year. At the poles only half the sky is ever visible. Ecliptic plane: plane of the earth"s orbit around the sun.
